Related Questions

A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?
A $$\frac{5}{{11}}$$
B $$\frac{6}{{11}}$$
C $$\frac{7}{{11}}$$
D $$\frac{8}{{11}}$$
Cost of fittings and their fixing is specified for the following sanitary fittings
A Water closets
B Flushing pipes
C Lavatory basins
D All the above
Which of the following has become the India’s first railway station to have sanitary napkin vending machine?
A Thane railway station
B Hazrat Nizamuddin railway station
C Kolkata railway station
D Bhopal railway station
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called
A Waste pipe
B Soil pipe
C Vent pipe
D Anti-siphonage pipe
A rain sanitary sewer is constructed to carry
A Sanitary sewage
B Storm sewage
C Surface water
D Ground water
Bad odour in sanitary latrines is reduced by periodically sprinkling
A Bleaching powder
B Lime powder
C Aluminium sulphate
D None of these
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is
A 0
B 1
C ∞
D None of these
Two pipes A and B can fill a tank in 20 and 30 minutes respectively . If both the pipes are used together , then how long will it take to fill the tank ?
A 12 min
B 15 min
C 25 min
D 50 min
Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opended together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?
A 10 min 20 sec
B 11 min 45 sec
C 12 min 30 sec
D 14 min 40 sec

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